Journal of the Korean Academy of Pediatric Dentistry 2007;34(4):685-693.
Published online November 30, 2007.
THE USE OF REMOVABLE APPLIANCE FOR THE CORRECTION OF MINOR IRREGULARITIES IN ANTERIOR SEGMENT
Ah-Ram Kwak1, Yeong-Chul Choi2, Jae-Hong Park2, Seong-Chul Choi2, Gwang-Chul Kim2
1Department of Pediatric Dentistry, Kyung Hee University
2Institute of Oral Biology, School of Dentistry, Kyung Hee University 
전치부의 경미한 공간부조화 개선을 위한 가철성 장치의 적용 예
곽아람1, 최영철2, 박재홍2, 최성철2, 김광철2
1경희대학교 치과대학 부속병원 소아치과
2경희대학교 치과대학 부속병원 구강생물학연구소
Correspondence:  Yeong-Chul Choi,  Tel: 82-2-958-9375, Email: choiyc@khu.ac.kr
Abstract
Class I malocclusion without skeletal problem results from tooth size/arch-size discrepancies, either evidenced by crowding, or spacing problems. Treatment method can be chosen according to dentition, the amount of arch discrepancy, patient compliance, or patient demands. We report of clear aligner and spring aligner that can be applicated in cases of permanent dentition with minimal arch discrepancy in anterior segment. There are some limits of application, but these are very useful appliances in the selective case. When crowding exists, definitive analysis and diagnosis should be made before starting treatment because certain amount of space must be obtained somewhere in the dentition to resolve the crowding. Therefore, appliance should be applied when lacking space is small. Also, in cases with spacing arch circumference is reduced after alignment so no problem in intermaxilla occlusal relationship must be confirmed. In case with crowding, judicious removal of interproximal enamel is indicated.
Key Words: Spring aligner, Clear aligner, Crowding, Spacing
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